Electron injection into laser wakefields by colliding circularly-polarized laser pulses

被引：15
|
作者：
Wang, W. -M. [2 ]
Sheng, Z-M [1 ,2 ,3 ]
Zhang, J. [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
[2] CAS, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing, Peoples R China
[3] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou, Zhejiang, Peoples R China
来源：
LASER AND PARTICLE BEAMS | 2009年 / 27卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Laser-plasma accelerator; Laser-plasma interaction; Optical injection; PIC simulation; PLASMA ACCELERATOR; BEAMS; TARGETS;
D O I：
10.1017/S0263034609000019
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Electron injection into a laser wakefield by the colliding of two circularly polarized laser pulses is analyzed by the Hamiltonian approach and particle-in-cell simulations. If the pump pulse driving the laser wakefield is right-circularly-polarized, electron injection is found only when the counter-propagating injection Pulse is left-circularly-polarized and vice versa. This holds when the injection pulse is at low intensity and has a frequency near the pump pulse frequency omega(0). For a moderately intense injection pulse, even if the two pulses have the same polarization, electron injection is found but with less efficiency. It is also found that the injection pulse with the frequency within [0.5 omega(0),3 omega(0)] call still create electron injection efficiently provided it has the opposite polarization with the pump pulse.
引用
收藏
页码：3 / 7
页数：5
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